Deadlock Lowest Input Lag Settings for Competitive Play
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Deadlock blends shooter aim with MOBA mechanics, and in close lane fights the player whose abilities and shots register first usually wins. Most of the input lag in Deadlock is controllable through the video settings, a console command or two, and your Windows setup. Here is the exact configuration for the lowest input lag in Deadlock.
Fullscreen, V-Sync off, and an fps_max cap below your refresh — that’s the low-latency core on Source 2.
Use Fullscreen
Set Display Mode to Fullscreen (exclusive), not Borderless Window. Exclusive fullscreen skips the desktop compositor and removes a frame of presentation delay, and it lets G-Sync/FreeSync operate correctly.
Cap FPS with fps_max below your refresh
Deadlock runs on the Source 2 engine, which caps frame rate with the fps_max console command. Enable the developer console, then set a cap a few frames below your refresh rate. You can also add it to launch options as +fps_max 138 so it applies every session:
| Monitor refresh | Suggested command |
|---|---|
| 144 Hz | fps_max 138 |
| 165 Hz | fps_max 158 |
| 240 Hz | fps_max 234 |
Capping below your refresh keeps the GPU off 100% so it never builds a render queue — the single biggest latency lever when an engine has no Reflex toggle.
Turn off V-Sync and latency-adding settings
- V-Sync: Off. Use G-Sync/FreeSync plus your
fps_maxcap for tear-free, low-latency frames. - Triple Buffering: Off. It buffers extra frames and adds delay.
- Dynamic / adaptive resolution: Off. Keep resolution fixed so it doesn’t fluctuate mid-fight.
- Lower shadow quality, particle detail, and ambient occlusion on weaker GPUs to keep usage below full load.
Note on NVIDIA Reflex
Unlike some newer titles, Deadlock (Source 2) does not currently expose a built-in NVIDIA Reflex toggle, so you can’t lean on it to drain the render queue. That makes the rest of this list more important: a tight fps_max cap, exclusive Fullscreen, and the Windows-level tweaks below do the heavy lifting on latency.
Keep the GPU below 99%
If the GPU sits at 99–100%, frames queue up and latency climbs. An fps_max cap below your refresh keeps usage in the safe range so inputs reach the screen quickly. Check GPU usage with an overlay during a real match, not just the sandbox.
Use a high mouse polling rate
A 1000 Hz (or higher) mouse polling rate samples your aim far more often than a 125 Hz mouse, trimming the input stage. Set the highest stable rate in your mouse software.
Fix Windows-level latency
- Set Windows to a high-performance power plan.
- Enable and test Hardware-Accelerated GPU Scheduling (HAGS).
- Turn on Game Mode in Settings → Gaming.
- Raise your Windows timer resolution with Tier1Timer. The default timer ticks slowly; raising the resolution samples input more often and smooths frame pacing, with Auto Mode that applies on launch and reverts on exit. See the ultimate guide to timer resolution.
Related guides
- How to Minimize Input Delay for Competitive Gaming
- How to Measure Input Lag
- Deadlock Stretched Resolution Guide
- The Ultimate Guide to Timer Resolution for Gaming
The lowest input lag in Deadlock comes from exclusive Fullscreen, V-Sync off with an fps_max cap below your refresh, and a clean Windows setup. With no Reflex toggle on Source 2, keeping the GPU off the ceiling and your timer resolution raised carries the most weight.
Frequently asked questions
How do I reduce input lag in Deadlock?
Run the game in Fullscreen, turn V-Sync off, set fps_max a few frames below your refresh rate, and keep the GPU off 100%. Deadlock runs on Source 2, so the console command fps_max gives you precise control over the cap. Combined with a clean Windows setup, these remove most of the controllable delay.
How do I cap FPS in Deadlock?
Deadlock uses the Source 2 engine, so you cap with the fps_max console command. Open the console (or use the in-game frame-rate setting) and set fps_max to a value a few frames below your monitor's refresh, for example fps_max 138 on a 144 Hz panel. You can add it to launch options as +fps_max 138 so it applies every session.
Should I use V-Sync in Deadlock?
No. V-Sync adds a frame or more of latency. Disable it in the video settings and instead rely on G-Sync or FreeSync paired with an fps_max cap below your refresh rate for tear-free frames without the input delay V-Sync introduces.
Does Deadlock support NVIDIA Reflex?
Deadlock is a Source 2 game and does not expose a dedicated NVIDIA Reflex toggle the way some UE5 and proprietary engines do. Because of that, the system-level levers matter more: a tight fps_max cap, exclusive Fullscreen, and Windows tweaks like timer resolution carry more of the latency reduction.
Does timer resolution reduce input lag in Deadlock?
It can improve input-sampling consistency and frame pacing at the system level. The default Windows timer ticks slowly, and raising the resolution with Tier1Timer samples inputs more often. Since Deadlock has no Reflex toggle, this Windows-wide tweak is an even more useful lever for low latency.